AlexClare94 Posted July 3, 2014 Report Share Posted July 3, 2014 What's the difference between parallel and non parallel sidewalls and does it improve the rims strength or affect the brake or wheel setup at all? And another question about rims is the difference between single and double wall design, single rear walls are lightweight and still strong but apparently it's bad for a rear wheel as they flat spot easier, not had much experience with them, just wondering if it would be worth it or not? Quote Link to comment Share on other sites More sharing options...
stirlingpowers Posted July 3, 2014 Report Share Posted July 3, 2014 My experience for the sidewalls: Buy washerless clamps and parallel-sidewall rims -> brake works even with dead grind. Buy Magura clamps with washer and angled rims -> tried to adjust many times, asked others to set it up for me, shitty brake every time. Quote Link to comment Share on other sites More sharing options...
dann2707 Posted July 3, 2014 Report Share Posted July 3, 2014 My experience for the sidewalls: Buy washerless clamps and parallel-sidewall rims -> brake works even with dead grind. Buy Magura clamps with washer and angled rims -> tried to adjust many times, asked others to set it up for me, shitty brake every time. Completely agree. There is nothing decent about non parallel sidewalls. I went from an onza pro diamond (non parallel sidewalls) rear rim to an echo urban (parallel sidewalls) and the ease of setting up the brake is unbelievable with echo washerless clamps. Really handy when you're on a ride and have to do a minor adjustment, you don't have to be there for ages and ages fiddling making sure it's all straight and square. Just fit and forget. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 3, 2014 Report Share Posted July 3, 2014 There is nothing decent about non parallel sidewalls. Other than they are more resistant to sidewall dents. Quote Link to comment Share on other sites More sharing options...
dann2707 Posted July 3, 2014 Report Share Posted July 3, 2014 Other than they are more resistant to sidewall dents. But definitely not more resistant to Dan James Cox sidewall dents Hahah Quote Link to comment Share on other sites More sharing options...
AlexClare94 Posted July 3, 2014 Author Report Share Posted July 3, 2014 So that's that question sorted I'm still wondering what is better to have out of double wall and single wall rear rims, cause on tarty they sell allot of good strong single wall rims but I've heard they aren't as strong as double wall but they save a hell of a lot of weight Quote Link to comment Share on other sites More sharing options...
Jake. Posted July 3, 2014 Report Share Posted July 3, 2014 My non-parallel tryall rim after 2 months. And my echo tr parallel rim after 1 year abeit a month old this picture Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 3, 2014 Report Share Posted July 3, 2014 ^^ Nothing to do with the sidewalls. Quote Link to comment Share on other sites More sharing options...
dngr2self Posted July 3, 2014 Report Share Posted July 3, 2014 Double walls are stronger but its down to the rider. I'd say double walls if you're thinking about longevity and single if you're more bothered about weight. 1 Quote Link to comment Share on other sites More sharing options...
Jake. Posted July 3, 2014 Report Share Posted July 3, 2014 ^^ Nothing to do with the sidewalls. It's completely to do with the sidewalls ;~) Quote Link to comment Share on other sites More sharing options...
Blake Posted July 3, 2014 Report Share Posted July 3, 2014 Try all rims are shiddy! Echo rims are solid! Non parallel may be less resistant to dents but I wouldn't consider one with a rim brake just because it's hassle that can be avoided. Quote Link to comment Share on other sites More sharing options...
Ross McArthur Posted July 4, 2014 Report Share Posted July 4, 2014 (edited) What makes non-para jobbies less (Sorry Edit) -more resistant to side wall dings? Are they built that way for that reason? Ive run TT single wall rims since they came out and never had a problem with regards to strength. Very impressed. Edited July 4, 2014 by Ross McArthur Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 4, 2014 Report Share Posted July 4, 2014 What makes non-para jobbies less resistant to side wall dings? Are they built that way for that reason? Rims dent inwards. The sidewalls face outwards on the Trialtech etc rims, so their shape naturally resists inwards dings. Quote Link to comment Share on other sites More sharing options...
dezmtber Posted July 4, 2014 Report Share Posted July 4, 2014 I would say i ride quite light with the odd ops moments, have pinched my holyroller and fat albert on the rear rim a couple of times. And have no dents or straghtness issues. On my viz single wall rim Quote Link to comment Share on other sites More sharing options...
dave33 Posted July 4, 2014 Report Share Posted July 4, 2014 Rims dent inwards. The sidewalls face outwards on the Trialtech etc rims, so their shape naturally resists inwards dings. So the side wall is stronger because of the outwards shaped sidewall? Or because of the shape they are less likely to dent? Can you explain this statement? Quote Link to comment Share on other sites More sharing options...
Jake. Posted July 4, 2014 Report Share Posted July 4, 2014 Something is definitely about to go down. Quote Link to comment Share on other sites More sharing options...
*gentlydoesit Posted July 4, 2014 Report Share Posted July 4, 2014 (edited) To be fair, I wondered how the angle would make it stronger too :+ I've dented all kinds of rim in all kinds of ways I guessed he meant pinch flat kinda dents, that the force applied straight/square on to the edge would push the rim in the direction its leaning. If it wasn't leaning, less inward dent. * but then I re-read this topic and it changes form one to the other It sooo depends on circumstance though imo. Edited July 4, 2014 by *gentlydoesit Quote Link to comment Share on other sites More sharing options...
aener Posted July 4, 2014 Report Share Posted July 4, 2014 So the side wall is stronger because of the outwards shaped sidewall? Or because of the shape they are less likely to dent? Can you explain this statement? Anyone can explain anything until they're blue in the face, but it'll do no good whatsoever if the recipient has no intention of listening. If by some chance that words you used to phrase that question sounded hostile by some unimaginably unlikely coincidence and you were genuinely asking a question rather than being a dick again, try thinking about the angles each part of your rim is at when landing a gap, and how dents normally form (assuming, that is, you gapped to one of your wheels rather than to a foot and climbed the rest of the way up ). Quote Link to comment Share on other sites More sharing options...
dngr2self Posted July 5, 2014 Report Share Posted July 5, 2014 If by some chance that words you used to phrase that statement sounded hostile by some unimaginably unlikely coincidence and you were genuinely answering a question rather than being a dick again ). Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted July 5, 2014 Report Share Posted July 5, 2014 (edited) if you imagine the straight sidewall knocking on the edge of an obstacle,you will find the force going through it from top to bottom. the angled one will have an angle to the edge too and more being pressed outwards and flexes instead of being hit straight and absorbing all the force directly the angled one will dent too eventually,but after more force applied,because of that flexing Edited July 5, 2014 by FamilyBiker Quote Link to comment Share on other sites More sharing options...
dezmtber Posted July 5, 2014 Report Share Posted July 5, 2014 My guess is when your tyre folds on impact it makes what may look fairly straight forward as a direct straight impact into a slightly angled impact due to the tyre folding. So the angled rim has been angled to compensate for the slight change in angle of impact when the tyre folds over to the other side of the rim. if your tyre isn't folding then you could still dent the rim during a pinch flat if your running pressures too low or doing gaps/drops larger than the intended use of the rim and tyre ect... Ect... trials is still pretty new to cycling really, so it doesn't surprise me that all trials components are still labelled as just trials components, they could really do with some of the lighter kit having more warnings that they are for comp use or smooth/lighter riders ect. its just common sence if you dent and bend rims don't buy the lightest ones or you will just keep doing it. double wall rims resist buckles and flat spots more than single wall rims. higher tyre pressures resist dented rims Quote Link to comment Share on other sites More sharing options...
dave33 Posted July 5, 2014 Report Share Posted July 5, 2014 Anyone can explain anything until they're blue in the face, but it'll do no good whatsoever if the recipient has no intention of listening. If by some chance that words you used to phrase that question sounded hostile by some unimaginably unlikely coincidence and you were genuinely asking a question rather than being a dick again, try thinking about the angles each part of your rim is at when landing a gap, and how dents normally form (assuming, that is, you gapped to one of your wheels rather than to a foot and climbed the rest of the way up ). anyone can explain anything with facts rather than opinions. Quote Link to comment Share on other sites More sharing options...
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